Export proper shader paths for HD / LW

ScriptableRenderPipeline/LightweightPipeline/LWRP/Editor/LightweightShaderIncludePaths.cs

 using System.IO;
+using System.Linq;
+using UnityEngine;
 
 namespace UnityEditor.Experimental.Rendering.LightweightPipeline
 {
         public static string[] GetPaths()
         {
-            return new[]
+            var srpMarker = Directory.GetFiles(Application.dataPath, "SRPMARKER", SearchOption.AllDirectories).FirstOrDefault();
+            var paths = new string[srpMarker == null ? 1 : 2];
+            var index = 0;
+            if (srpMarker != null)
-                Path.GetFullPath("Packages/com.unity.render-pipelines.lightweight/LWRP/Shaders"),
-            };
+                var rootPath = Directory.GetParent(srpMarker).ToString();
+                paths[index] = Path.Combine(rootPath, "ScriptableRenderPipeline/LightweightPipeline");
+                index++;
+            }
+            paths[index] = Path.GetFullPath("Packages/com.unity.render-pipelines.lightweight");
+            return paths;
         }
     }
 }

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Editor/HDShaderIncludePaths.cs

+using System.IO;
+using System.Linq;
+using UnityEngine;
+
+namespace UnityEditor.Experimental.Rendering.LightweightPipeline
+{
+    static class HDIncludePaths
+    {
+        [ShaderIncludePath]
+        public static string[] GetPaths()
+        {
+            var srpMarker = Directory.GetFiles(Application.dataPath, "SRPMARKER", SearchOption.AllDirectories).FirstOrDefault();
+            var paths = new string[srpMarker == null ? 1 : 2];
+            var index = 0;
+            if (srpMarker != null)
+            {
+                var rootPath = Directory.GetParent(srpMarker).ToString();
+                paths[index] = Path.Combine(rootPath, "ScriptableRenderPipeline/HDRenderPipeline");
+                index++;
+            }
+            paths[index] = Path.GetFullPath("Packages/com.unity.render-pipelines.high-definition");
+            return paths;
+        }
+    }
+}

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Editor/HDShaderIncludePaths.cs.meta

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